Detailed information on troubleshooting and repairing a P0328 DTC code which has to do with high range on the bank 1 knock sensor circuit. Also includes links to relevant forum topics on the code.

Symptoms of P0328 OBD II Trouble Code

MIL (Malfunction Indicator Lamp) illumination

Audible knocking from the engine compartment

Pinging from engine under acceleration

Loss of power

Irregular RPM

Common Causes of P0328 OBD II Trouble Code

Knock sensor connector is damaged

Knock sensor circuit is open or shorted to ground

Knock sensor circuit is shorted to voltage

Knock sensor has failed

Loose knock sensor

Electrical interference in circuit

Low fuel pressure

Incorrect fuel octane

Mechanical engine problem

Failed/faulty PCM

Severity of P0328 OBD II Trouble Code

A P0328 code is a generic DTC, thus it applies to all makes of vehicles, and refers to a high output voltage of the knock sensor. In many cases, this means the voltage is above 4.5V but that specific value depends on the specific make and model of vehicle. This code refers to the sensor on bank #1.